Case Report
Nonextraction Management of Severely Malaligned and Constricted Upper Arch
Table 1
Pretreatment cephalometric analysis.
| Variable | Pretreatment | Normal |
| SNA | 77° | | SNB | 80° | | ANB | -3° | | SN to maxillary plane | 8° | | SN to mandibular plane | 30° | 32° | Wits appraisal | -5 mm | 0 mm | Upper incisor to maxillary plane angle | 110° | | Lower incisor to maxillary plane angle | 85° | | U6–PTV | 11.9 mm | — | L6–PTV | 13.2 mm | — | Interincisal angle | 142° | | Maxillary-mandibular plane angle | 22° | | Upper anterior face height | 51 | — | Lower anterior face height | 63 | — | Face height ratio | 55% | 55% | Lower incisor to APo line | 4 mm | 0–2 mm | Lower lip to Ricketts plane | -6 mm | -2 mm | Upper lip to Ricketts line | -4 mm | -4 mm | Nasolabial angle | 119° | | Mand length (co-Pog) | 113 mm | 117 mm | Max length (co-A) | 86 mm | 92 mm | Max/mand differential | 27 mm | 27 mm |
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